I have done a few of the under pan upgrades to my 2009 Corolla (all the front ones) as shown on this diagram of pans put in place for the 2014 Corolla:
http://toyotanews.pressroom.toyota.c...8_2524_low.jpg
I am trying to figure this one out from the 2014 Corolla:
http://toyotanews.pressroom.toyota.c...1_2524_low.jpg
I know the rear bumper plastic skin on the 2014 Corolla is of more flimsy nature than on the 2009, but I can't figure out what is going on here. You have parts bracing the rear bumper skin, but then not really having enough coverage to bridge the gap between the spare wheel well and the bumper (3" gap) as the semi circle cutout is there so the jack can access the rear jack point.
Then you have 4 boat tail like parts out on a mostly flat piece already. From what I gather to straighten flow.
Then the whole part itself actually is lower than the spare tire well by 2 inches or more. I get this one. I believe that this part is so that flow can be assisted as it leaves the car.
Would my car benefit from something like this? Do I need the 4 boat tails and how much drag would this be reducing to be worth doing?